The 'biggest' rifle I have fired = BRNO/'CZ' .416 Rigby.

I did not hold on, or should that have been lent down on!, the forend tight enough. All I saw through the 'scope was sky when I fired.

The worst, felt recoil = my Win Mod 70 .375H&H mag.

This was a re-barrel job from their new classic rifle. The original calibre was .300Win Mag. The stock was too narrow/ shallow and the rifle was (then) underweight for the .375H&H chambering. I have had that fixed now though.